Turn on the first for one min and then turn it off. , G3 p* G7 m6 w$ ?- R6 [Turn on the 2nd for five min and then turn it off. - @6 a' X# A: Z; r3 v' V; x7 O# B6 LTurn on the 3rd and leave it on.; W" u" ]1 o \5 I2 l
And then go upstairs right away.- F, s0 _( t$ u; r3 I2 N
, H' D! y8 U S1 m4 bFind the answer by using your fingers and eyes1 e$ A5 K8 m; n8 u, T
这只是一个智力问题,不象是电工问题。
原帖由 老警察 于 2009-1-16 07:12 发表 1 s( o0 X* B7 |
Turn on the first for one min and then turn it off." b& C* Z. N5 C) g( c7 z/ s
Turn on the 2nd for five min and then turn it off.7 L3 `' q6 W$ h/ G
Turn on the 3rd and leave it on.9 ^5 F$ ?. q6 i
And then go upstairs right away.; w q: _' v: ~, R3 c' M
2 t( I1 M3 b8 d0 V# b$ S- j8 x
Find the answer by using ...